Blue Bird Corporation, the clean-energy school bus manufacturer tied to SPAC ticker HCAC, filed an 8-K current report with the SEC on March 11, 2026, under accession number 0001589526-26-000013. The SPAC vehicle, Hennessy Capital Acquisition Corp, was sponsored by Hennessy Capital Group and completed its IPO in 2013 before combining with Blue Bird to form a publicly traded manufacturer operating in the commercial transportation and electric vehicle sector. The 8-K reflects continued public-company reporting obligations for the de-SPAC entity, which has remained an active filer since the original combination closed. Investors and analysts seeking full filing histories, sponsor profiles, and real-time SPAC event tracking for HCAC and thousands of other transactions can sign up for complete data access at SpacDesk.